A charge nurse is observing a newly licensed nurse provide care to four clients. Which of the following actions requires intervention by the charge nurse?

Assesses the client's gag reflex following an esophagogastroduodenoscopy

Maintains the chest tube collection device below the level of the insertion site when ambulating the client

Elevates the head of the client's bed to 30° before inserting a nasogastric tube

Assists the client into a fetal position on his side in preparation for a lumbar puncture